Just find the number of columns of the given matrix.
Example
x = [1 2 3 4 5 6] y = 2
improve test suit
Maybe more test cases here? ;-)
Swap the first and last columns
9888 Solvers
Remove all the words that end with "ain"
1026 Solvers
244 Solvers
385 Solvers
212 Solvers
Solution 811173
Maby this one needs some more test suites ;)